<?php

/**
 * Projeto Euler
 *
 * Problema #1
 *
 * Questão:
 *
 * If we list all the natural numbers below 10 that are multiples of 3 or 5, we get 3, 5, 6 and 9. The sum of these multiples is 23.
 * Find the sum of all the multiples of 3 or 5 below 1000.
 **/

    $soma = 0;

    for( $y = 1; $y < 1000; $y++ )
    {
        if( $y % 3 == 0 || $y % 5 == 0 )
        {
            $soma += $y;
        }
    }

    echo $soma;

?>
